There is a requirement to segregate network activity on our local campus. Currently, DHCP is used to assign IP addresses based on Vendor and User class information. Is there a way to use the assigned IP address instead of the MAC address to define VLAN membership?
As far as I know, I don't think it's impossible. Let me explain.
The following assumes you configured a 1:1 IP subnet to VLAN scheme. With Dynamic VLAN Membership protocol the source address of the first frame (maybe even be a DHCP request) is used to determine VLAN. Once VLAN is determined, its assigned by the switch. The broadcast DHCP frame will be heard by the router interface residing on that VLAN. The router performs its DHCP relay function and forwards a unicast request with the requesting host subnet (VLAN) to the DHCP server. Based on this information the DHCP server knows what IP scope/subnet (VLAN) to use.
Without the subnet/VLAN already determined the DHCP process wouldnt work in this scenario.
Can you please elaborate your requirements? Would statically configure VLANs to fulfill your requirements?
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